bennett



3 Sheets-Sl1eet 1.

W fim/WZZ (No Model.)

W, E. BENNETT.

LOOP REMOVING. AND SPREADING MECHANISM FOR BUTTON SEWING MACHINES.

N PEYERS. Fram-Lhhugnpher. Wilmington, n 0.

3 Sheetsi3heet 2.

(No Model.)

' W. E. BENNETT.

LOOP REMOVING AND SPREADING MECHANISM FOR BUTTON SEWING MACHINES.

Patented Mar. 5

3 SheetsSheet 3,

(No Model.)

W. E. BENNETT.

LOOP REMOVING AND SPREADING MECHANISM FOR BUTTON SEWING MACHINES.

UNITED STATES PATENT EEicE.

\VALTER E. BENNETT, OF BOSTON, MASSAUHUSETTE, ASSIGNOR TO THE MORLEYBUTTON SEVING MACHINE COMPANY, OF SAME PLACE.

L00? REMOVlNG AND SPREADING MECHANlSM FOR BUTTON-SEWlNG MACHlNES.

SPECIFICATION forming part of Letters latent No. 399,179, dated March 5,1889. Application filed Tune 14, 1888. Serial No. 277,108. (No model.)

To all whom it may concern.-

Be it known that I, WALTER E. BENNETT, a citizen of the United States,residing at Boston, in the county of Suitolk and State of Massachusetts,have invented a new and 1111- proved Loop Removing and SpreadingMechanism for Shank- Button-Sewing Machines; and I do hereby declare thefollowing to be a full, clear, and exact description of the constructionand operation of the same, reference being made to the accompanyingdrawings, forming a part of this specification.

This in vent-ion relates to improvements upon the niachi no for sewingshank-buttons to boot and shoes, (for which Letters Patent were grantedto Rosewell Thompson November 30, i 1886, No. 353,609,) the stitchformed by said machine at: the present time being that for i the methodof making which Letters Patent were granted to me July 26, 1887, No.367,584, my object bcin to remove the secondary loop of thread from theopen eye of the needle after it has been drawn up through the fabric,then spread said loop of thread snfiiciently wide to pass it over abutton-head with the assist ance of the take-up and tension mechanismsof the machine, the same being accomplished 1 by the use of a device Iterm a loop-taker, having a carrier and other operating inechair ismswhich regulate and control its position with relation to said noodle andloop of. thread, all of which will herein be fully explained anddescribed. I Y

In the accompanying drawings, Figure l is a left side view of themachine referred to with body shown in section and with the slidingplate, loop-taker carrier, loop-taker, and theiroperating levers andcams in their proper positions, but with the presser-foot,fabricfeeding, and some of the stitch-forming mechanisms removed, whichdevices forin no part i of my present invention. Fig. 2 is an enlargedleft side view of the front end of the l fahric-snpporting table withihread-controller and end of take-up bar in the same. Above l the fabricis the front end of the arm of the machine, the needle-barbearing-support, oscillating needle-bar bearing, needlebar, slidingplate, loop-taker carrier, loop-taker, and ends of the operating-leversof the latter-! named devices, thepoint of said loop-takeris shownentering the drawn-up loop of thread. Fig. 3 is a front view of the sameparts of mai chine and devices referred to in above-named figure. Fig.:4 is also an enlarged side View of thethread-controlling device underthe fabric, and above the same is the loop-taker carrier, loop-taker,ends of their operatinglevcrs, and lower portion of sliding plate; butwith the cover-plate of loop-taker removed from the carrier, so toclearly show the form and position of the said loop-taker. In thisfigure the sliding plate, loop-taker carrier, and loop-taker are raisedso as to cause the upper snrface ot' the point of the latter to be aboutthe same height as the center ot the open eye of the noodle, so thatwhen the strain is exerted upon thcloop of thread by the takeup andtension devices said loop may be removed from the eye of said needle inconsequence of the sloping form and angular position of said loop-taker,the sliding motion of said loop being represented by broken lines inthis figure. Fig. 5 is a view of the lower end of the needleand alongilndinalsection of the loop-'i'aker through its center and raised toits highest position, as in the preceding figure. This sectional Viewclearly shows the slot in which the needle enters and the opening forthe button-head at the bottom. Fig. 6 is a top view of the loop-taker,showing its point entering a loop of thread and the point of the needlein the narron slot in the looptaker. Fig. 7 is also an enlarged view ofthe same devices represented in Fig. r, but with sliding plate,loop-taker carrier, and loop taker in a lower position and loop ofthread passing down the body of the loop-taker. Fig. is also arepresentation of said devices, but with the sliding plate, loop-takercarrier, and.

loop-taker in their lowest position, and with the loop of thread passingunder the looptaker and a button-head. Fig. 9 represents the parts insame position, but with the loop of thread passed under the button-headand drawn snugly around the shank of the button, after which the fabricmoved back by the feeding mechanism, and the loop-taker carrier andloop-taker are raised to about the position shown in Fig. 10, in whichposit-i011 they remain during the formation of the stitch until thesecondary loop of thread is drawn up to its highest position by theneedle. Then the loop-taker is again lowered, so that the point of thesame may enter the loop of thread, as previously shown and described.

Fig. 11 is' an enlarged bottom view of the loop-taker carrier andloop'taker. Fig. 12 is an enlarged cross-section of the same on line 00m, Fig. 10. Fig. 13 is an enlarged cross-section of the loop-takercarrier and its coverplate on line w as 00 0c, Fig. 10.

Similar letters of reference indicate correresponding parts.

A is the body.

B is the fabric-supporting table, and C is the arm of the machine.

D is the needle-bar-bearing support.

E is the oscillating needlerbar bearing.

F is the needle-bar.

G is the needle-bar carrier.

H is the needle-bar pitman.

I is the needle-bar lever.

J is the take-up bar.

K is the take-up-bar lever.

I. is the take-up bar and lev r-c(mnection.

M is the thread-controller.

N is the thread-controller rod.

0 is the thread-roll, and P is the tension mechanism.

a is the sliding plate fitted to move upon the front face of theneedle-bar-bearing sup port, and having an extension a, at its lower endand bent at a right angle, a, over the lower needle-bar bearing.

' b is the loop-taker carrier, and is pivoted to the lower side of thean gle-plate a".

b is the eovenplate of the loop-taker.

c is the loop-taker.

(l is the loop-taker carrier-1m]:

e is the loop-taker carrier-lever.

fis the loop-taker carrier-cam.

g is the sliding-plate lever, and 7'; is the sliding-plate cant.

The practical operation of my improved loop removing and spreadingmechanism is asfollows: The loop-taker carrier and looptaker areretained in the position shown in 10 during the formation of the primaryloop of thread and all other parts of the stitch until the needle hasdrawn the secondary loop of thread up through the fabric and to itshighest position above the same, as shown in 2. Then the carrier andloop-taker are lowered by their operating mechanism to the positionshown in this figure, the point of said loop-taker having entered theloop of thread during said lowering movement, as shown in this and Fig.6. Then said mechanism raises the carrier and looptaker to the positionshown in Figs. 4 and 5, so that the top face of the point of thelooptaker may be at about the center of the open eye of the needle, thenarrow slot in the loop taker making an opening for the point of theneedle to enter, as shown in Figs. 5 and 6. lVhile the loop-taker is inthis position the take-up and tension mechanisms exert sufficient strainupon the thread to cause said secondary loop to slide out of and awayfrom the open eye of the needle and down the smooth, round, and inclinedface of the loop-taker, as shown in Figs. 4 and 7. There 2 portions toallow the free passage of the loop of thread between them while stillretaining the loop-taker in its carrier. The curved portion of thecarrier and the cover-plate is shown in the enlarged drawings, Figs. 11,12, and 13. While the loop of thread is thus sliding down the face ofthe loop-taker, the latter and its carrier are lowered by theiroperating mechanism, as shown in Fig. 7, until they are in the positionshown in Figs. 1, 2, 3, 8, and 9, the large opening in the lower end ofthe loop-taker allowing the same to pass over the button, so that as thestrain upon the loop of thread continues to be exerted by the take-upand tension mechanisms said loop may pass under the end of theloop-taker below the horizontal center of the button-head, as shown inFig. 8, then under the button-head, and be snugly drawn around the shankof the button, as shown in Fig. 9, thus completing the stitch. After thecompletion of the stitch the carrier and looptaker are raised to aboutthe position shown in Fig. 10, and the fabric is moved back by thefeeding mechanism sufficiently far to sew another button in its properposition upon the same, and after the formation of the primary loop ofthread and other parts of the stitch the operations of drawing up thesecondary loop of thread, removing it from the open eye of the needle,and spreading and passing it over the button-head are repeated, as abovedescribed.

1 am aware that prior to my invention various devices have been employedin buttonsewing machines to pass a loop of thread over a shank-buttonhead; but

' Iclaim as my invention and desire to secure by Letters Patent- In ashank-button -sewing machine, the combination, with the work-table,open-eyed doublebarb needle, stitch-forming tension,

and take-up devices and their operating mechanisms, of the loop-taker cand its swinging, rising, and falling carrier 19 and operatingmechanisms, said loop-taker having the point ITO at the top to receive aloop of thread from the eye of the needle, a slot to receive the pointof the needle, and an opening at the bottom to receive a button-head andfitted loosely in its carrier, the latter being partially curved aroundits back and bottom to retain it in its proper working position, andoperating substantially as described, for the object set forth.

WVALTER E. BENNETT. WVitnesses:

RosEWELL THOMPSON, J ESS E MOR EY.

